基于变结构MRAS辨识转速永磁电机矢量控制系统

Variable-Structure MRAS Speed Identification for Vector Control of Permanent Magnet Synchronous Motor

提出了一种新颖的变结构模型参考自适应观测器,用于永磁电机无速度传感器矢量控制系统的转速辨识。该方法将变结构控制与MRAS进行有机的整合,选取永磁电机本身作为参考模型,而选取永磁电机电流模型作为可调模型,利用两模型输出的误差构造了一个滑模面。理论分析和仿真结果表明,所提出的永磁电机无速度传感器矢量控制系统的转速辨识方法具有较强的鲁棒性和令人满意的动静态性能。

A novel variable-structure MRAS observer for speed identification was proposed in a sensor-less vector controlled PMSM （permanent magnet synchronous motor） drive. This strategy selects PMSM itself as the reference model and its current model as the adjustable model by combining MRAS with variable-structure control to formulate a slide mode surface according to two model output errors. Theoretical analysis and simulation results show that the proposed strategy has stronger robustness and satisfactory performance.